Cable anchoring means for drums



June 13, 1933. J. LE R. PHELLIPS 1,913,508

CABLE ANCHORING MEANS FOR DRUMS Filed Aug. 3, 1929 I lgi Patented June 13, 1933 PATENT OFFICE TAKES LE BOY PHILLIPS, F OAKVILLE, WASHINGTON 'CAIBLE ANCHORING MEANS FOR DRUMS Application filed August 3, 1929. Serial No. 883,405.

My invention relates tocables and means for anchoring the ends thereof, and is particularly intended as a means for anchoring the end of a cable to a winding drum, though it is not necessarily limited to such a purpose.

My invention will find a particular field of usefulness in logging operations, in the connection of various lines to the drum of the winding engine, and will be found, also, of

advantage in the general field of hoisting en ines and the like.

t is the primary object of my invention to provide a means for anchoring the end of a cable to the drum upon which it is to be wound, in such a manner that the accidental disenga ement of the line from the drum is impossi le.

More specifically, it is my object to provide.

an anchoring means of the general character indicated, in which the connection between the cable and the drum is made by means of a plurality of unrelated movements, of such character that the forces naturally acting upon the cable to pull it from the drum will g5 not cause the cable to move accidentally through the predetermined succession of movements necessary to disengage the cable. A further object is the provision of an anchoring means of this character, by the use of which the line is maintained as nearly as possible in straight lines, that is, without sharp kinks or curves.

Other objects, and particularly those which pertain more purely to structural re 5 lationships, will lie-ascertained from a study of the drawing, the specification, and claims, all forming part ofthis application.

My invention comprises the novel parts, and the novel combination and relationship 0 thereof, as shown in the accompanying drawing, described in the specification, and as is more particularly defined by the claims which terminate the same.

In the accompanying drawing I have shown my invention associated with a logging engine drum, in a form which is now preferred by me.

Figure 1 is an elevation of a drum of this character, with the end of the cable started thereon and anchored thereto.

Figure 2 is a similar elevation of the drum alone, the cable being omitted. f

Figure 3 is a section on the line 33 of Fi ure 2.

igure 4 is a section on the line 4-4 of Fi ure 1.

invention is of value particularly in logging operations, since the cables used in such operations are extremely large and heavy, perhaps an inch and a quarter in diamw eter, hence difl'icult to handle, should the anchoring means give way and permit the cable to run out through the head block, and because, in case of an accident of that sort the entire crew is idle until the cable system is in working condition again. It will be understood, also, that such heavy cables as these, made of steel strands, are not only extremel difficult to bend sharply, but that any suc sharp bend produces stresses which are destructive ofrthe cable, and dangerous because of the possibility of failure at such a point. Accordingly, it is one of my objects to provide an anchoring means of the general class indicated above, wherein the cable has no sharp bends, and the curvature is of substantially the same curvature as the courses wound upon the drum.

The drum is made up in any suitable or usual fashion, with the barrel 1 and the 30 flanges 10 and 11. Since the cable should start to wind from one end of the barrel of the drum, I have shown the anchoring means as formed adjacent the flange 11, and consisting of the longitudinal slot 2, having an 55 enlargement or aperture 20 forming of the slot 2 a keyhole slot, and within the interior chamber 12 of the drum a shoulder or shoulders 21 are formed. This shoulder or these shoulders 21 are located at one side of the slot 2, and not at the other side.

The cable 3 has formed upon its end, or secured thereto, a knob 30. Such a knob consists in eflect of a sleeve or like enlargement solidly secured upon the end of the cable, and since such knobs and the manner of their securement are well known in the art no detailed description thereof is' necessary. The aperture 20 is made of a size to pass the knob 30, but the slot 2 is not wide enough to permit the knob to be drawn through it, though large enough to permit movement of the cable 3 lengthwise thereof. The shoulders 21 are formed to receive the ends of the knob 30, which seat against these shoulders, and which must be disengaged therefrom before the cable can be moved along the slot 2 or the knob withdrawn from the aperture 20. The aperture 20, also, is preferably inclined somewhat inwardly and away from the flange 11, so that the knob must be inserted therein and withdrawn therefrom with the cable inclined somewhat. Thus, it would be practically impossible to disengage the knob from the slot 2 and aperture 20, were there any strain on the line tending to pull the knob from its anchor on the drum, since, under such conditions the line could not be canted or inclined relative to the aperture 20 so as to lie in its axis. Also, it is diflicult to conceive that the line, if

u 'the knob were to be accidentally disengaged from the shoulder 21, would be moved single bight of the cable.

- lengthwise of the slot 2 toward the aperture 20, for the succeeding coursesof the line will overlie that end of the slot which is toward the aperture, and the aperture itself.

- To accommodate the second course, and to prevent kinking of the line, the upper edge of the slot 2 at one side is grooved, as indicated at 13, this being at the side opposite the shoulder 21-. Furthermore, a filler block 14, Of the height of the course of cable, is built up upon the barrel 1, tapering from the inner face of the flange 11 to a point at the edge of the slot 2 where it is the width of a This fills in the space that would-be ordinarily left vacant by reason of the overlapping of the first and second bights. Such a block may be cast integral with the drum, or made separate and laid in place, though the former is preferable.

. It is believed that the manner of engagement of the cable and drum will be obvious,

and it will be seen, in Figure 4 especially, how the'cable, knob, and drum are positioned with cable wound upon the drum, and how, in such position, the strain on the end of the cableis taken by the shoulders'21, and how the line extends thence with the minimum of curve, and how this curve may be made gradual, not substantially greater than the curve of the cable wound upon the drum.

and a shoulder within said chamber, at one side of the slot and spaced from said aper-' having a flange, and the slot, at the end adjacent the shoulder, terminating at the base of the flange, the aperture being formed at the opposite end of the slot, and a filler block formed on said drum at the base of the flange, and tapering outward from the flange to the width of the cable, at the slot, and there terminating, said block being uniformly of the height of a single layer of the cable, being thus adapted to receive thereon the second layer of cable.

5. The combination of claim 1, the drum having a flange, the upper edge of the slot, opposite the shoulder and adjacent the base of the flange, having therein a groove the width of the cable, to receive the cable as it emerges from the slot, and to guide the cable close to the flange of the drum, to pre vent involuntary lateral movement of the cable along the slot.

6. A cable anchoring means for winding drums, comprising, in combination with the cable and the drum, a knob upon the end of the cable, the drum' having an aperture to receive the cable end and knob, and said drum having two spaced, connected means engageable in succession after the knob has been received in said aperture, by relative movement of the drum and knob, the first means to prevent relative movement of the cable and knob and the drum except longitudinally, and the second means to prevent their relative movement except rotationally in a plane normal to the drums axis.

7. A cable anchoring means for winding drums, comprising, in combination with the cable and the drum to receive the same, a knob secured on the end of the cable, the drum having a keyhole slot extending longitudinally thereof the enlargement being at an angle to the drums axis and permitting passage of the knob, and the reduced portion permitting passage of the cable but not the knob.

8. The combinatifin of claim 7, one side edge of the small e d of the slot being externally grooved and the other side being internally grooved to receive and restrain the cable in its anchored position and. to prevent sharp bending in'the cable.

names 9. The combination of claim 1, the drum having a flange, and the slot, at the end adjacent the shoulder, terminating at the base of the flange, the aperture being formed at i the opposite end of the slot, and an integral filler block on said drum at the base of the flange, and tapering outward from the flange to the width of the cable, at the slot, and there terminating, said block being uniform- 1 1y of the height of a single layer of the cable,

being this adapted to receive thereon the second layer of cable said block being also internally recessed above the normal surface of the drum to receive the anchored cable end. Signed at Seattle, Washington, this 27th day of Jul 1929.

Y JZMES ROY PHILLIPS. 

